Quarterly report pursuant to Section 13 or 15(d)

LIABILITIES AND LONG-TERM DEBT - Schedule of Carrying Amounts of and Issuance Costs of Debt (Details)

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LIABILITIES AND LONG-TERM DEBT - Schedule of Carrying Amounts of and Issuance Costs of Debt (Details) - USD ($)
Sep. 30, 2021
Dec. 31, 2020
Line of Credit Facility [Line Items]    
Loan fees $ (332,000) $ (468,000)
Total long-term debt 42,949,000 46,095,000
Less current portion including loan fees 4,194,000 4,194,000
Total long-term debt, less current portion including loan fees 38,755,000 41,901,000
Term Loan Facility    
Line of Credit Facility [Line Items]    
Total debt, gross 43,281,000 46,563,000
Revolving Facility    
Line of Credit Facility [Line Items]    
Total debt, gross $ 0 $ 0